Disk-harrow attachment.



V, E. HULGE. DISK HARROW ATTACHMENT.

APPLIUATION FILED FEB.15, 1909.

QSLQZS.' Patented Aug. 24, 1909.

UNITED STATES PATENT OFFICE.

VICTOR E. HULCE, F RIVERSIDE, CALIFORNIA, ASSIGNOR T0 NEWELL MATHEWSCO., 0F LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

DISK-HARROW ATTACHMENT.

Specication of Letters Patent.

Application led February 15, 1909.

Patented Aug. 24, 1909.

Serial No. 477,894.

To all whom it muy concern:

Be it known that I, VICTOR E. HULCE7 a citizen of the United States,residing at Riverside, in the county of Riverside and State ofCalifornia, have invented new and useful Improvements in Disk-HarrowAttachments, of which the following is a specification.

This invention relates to an attachment adapted to render possible theadjustment of the working angle of the disks without the necessity ofdemounting any of the parts as has heretofore been the case. In workingunder differing conditions it is necessary for the best results that theangle which the disks make with the line of advancement of the harrowshould also be varied. In the constructions heretofore used it isnecessary to stop the use of the harrow and to loosen some of the partsto make the desired adjustments, and this is not only inconvenient inthat it entails a loss of time but also in that the adjustment cannot bemade so accurately as it can be made with my new attachment. lith thenew attachment the angle of the disks may be changed to suit the needsof any particular case while the harrow is in operation, the elfect ofthe adjustment being thus readily noted and the final adjustment beingtherefore made more accurately.

In particular the invention comprises a construction which is solid inits support of the disks and which turns on a simple pivot which is notdirectly over the disks. There are other points of construction whichallow of a convenient adjustment of t-he parts and these will appear inthe following'.

In the accompanying drawings; Figure l is a perspective view of a diskharrow equipped with my improved attachment. Fig. 2 is an enlarged planview of one of the 'sets of disks and its mounting. Fig. 3 is a detailsection taken on line 3 3 of Fig. 2. Fig. 4 is a detail section taken online 4:*1 of Fig. 2.

Referring more particularly to the drawings, 5 designates the main frameof the harrow which is shown in conventional style as the particularconfiguration or operation of the frame does not have any bearing on thepresent invention. The front portion of the frame is supported on wheels6 and the usual arrangement 7 is provided for the drawing of the harrowby horse or other power. A seat 8 is provided for the operator, thisseat being suspended on a spring support over the rear part of theframe. Attached to the rear end of the frame is a transverse bar `9 uponwhich the harrow disks l0 are mounted. In the usual construction now inuse the disks are affixed to the bar in a rigid manner. My inventionhere interposes a pivotal joint by means of which the working angle ofthe disks may be changed as is indicated in Fig. 2. The disks aremounted on shaft 1l which in turn is mounted in bearings l2 on the endsof yoke 13. This yoke is placed horizontally and its center is near bar9 on the rear end of the harrow frame.

Secured by clamps 1t to bar member l5. A bolt 16 passing verticallythrough this member supplies the pivot for a swinging clamp member 1T,the member having extensions 1S which pass around the bar 9 and allowsufficient space between the body of the clamp member and the bar forthe turning of the member. The outer face of the clamp member is toothedas at 19 and the correspondingly toothed face of an adjustable shoe 2()bears against it. On its outer face the shoe is provided with ahorizontal slotin which yoke 13 is partly embedded so that the yoke isforced to turn with the shoe. The whole construction is held together bya pair of bolts 2l which pass through the clamp member and shoe and astrap 22 outside the yoke. For the passage of the bolts through theclamp member only holes of nominally the bolt diameter are provided sothat bolts have no relative movement therewith. In the shoe, however,elongated slots '23 are provided so that it may have a rotating movementon the clamp member. By means of adjusting the shoe the horizontalposition of the yoke and of the disk shaft may be adjusted. i

Mounted on the yoke at each side of its center is a clamp 24 composed oftwo right angled pieces 25 held together by bolts 2G at t-he top andbottom. At the top the clamps surround and rigidly grip the yoke 9 is apivot' 13 and at the bottom a bar 3() is secured bes tween theirhorizontal ends. Bar 30 projects inwardly and at its end connects with arod 3l by the longitudinal movements of which the position of bar 30 andthe yoke carrying the disks is adjusted. It will be seen that the lengthof the bar 30 may be varied so that the amountof movement of the disksfor a given longitudinal movement of rod 31 may be thereby varied. Rod31 extends forwardly along the frame of the harrow and connects to theldownwardly projecting end 32 of hand lever 33 mounted at 34 on asector. This sect-or is toothed in the usual manner and the standarddevice i'sprovided on the lever to set it on the sector at any desiredpoint. By adjusting the lever it is seen that the working angle of thedisks may be variedl at will and that when the lever is set in positionthe disks will also be set.

In the machine illustrated in the drawings there are two sets of disks,the mechanism being the same for both sets. It is obvious that there maybe as many sets as is desired, the mechanism above described beingapplied to each ofthe sets. Each of the sets may be adjustedindependently of eachV other and this is seen to be an advantage as itis sometimes undesirable to have all the disks at the same angle.

Having described my invention, I claim 1. In a disk harrow construction,a main frame having a transverse bar at its rear bolts holding the shoe,disk frame and clamp member together, clamps mounted on the disk frameand projecting below the same,

an adjustingbar secured in the lower ends of the clamps, a rod attachedto one end of the adjusting bar, and manuallyV operated means to movethe bar.I

2. In a disk harrow construction, a main frame having an operators seatthereon', a transverse bar on the main frame at the rear end thereof, apivot member adjustably mounted on the transverse bar, a vertical pivotcarried by the member, a clamp member mounted on the pivot toV swing ina horizontal plane, the clamp member projecting rearwardly from' thepivot and having a vertical roughened surface at its rear end, a shoewith a roughened face adapted to engagejthe j roughened surface in theclamp member, the shoe having a normally horizontal groove in its rearface, a horizontally disposed U- shaped disk frame fitting into theVgroove,`a ,strap bearing against the disk frame, bolts passing throughthe strap and secured to the 1clamp member, clamps mounted on the diskframe and extending downwardly therefrom, an adjusting bar adjustablysecured in 'the clamps below the disk frame, a rod attached to one endof the adjusting bar, and a hand lever mounted on the main frame of gtheharrow adjacent the operatorsseat and connected to the rod.

In witness that I claim the foregoing I have hereunto subscribed my namethis sixth day of February 1909.

vieron n. nULcn.

Witnesses:

C. Kns'rnr., B. B. BUSH.

